2x 2 5x 3 7 July 8, 2019 16 32 64 128 2x 2 5x 3 7x 4 9 2x 2 5x 3 x 7 2x 3 5x 2 7x 3 2x 3 5x 2 7x 4 2x 3 5x 2 3x 7 0 2x 4 3 5x 7 2 2x 3 5x 2 4x 7 0 2x 3 7x 2 5x 1 0 2x 4 3x 3 5x 2 7x 11 0 3 2x 7 2 5x 14 2x 4 5x 3 )= 21 7 3x 2 2x 5x 3 7 3x 2 2x 1 3 5x 3 2 7 x 6 2x 2 5x 3 7x 2 x 4 (- 2x 2 5x 10 7x 3
